An experimental-numerical technique for evaluating the bulk and shear dynamic moduli of viscoelastic materials

被引：14

作者：

Willis, RL ^{[1
]}

Stone, TS ^{[1
]}

Berthelot, YH ^{[1
]}

Madigosky, WM ^{[1
]}

机构：

[1] VECTOR RES CO, ROCKVILLE, MD 20852 USA

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 1997年 / 102卷 / 06期

关键词：

D O I：

10.1121/1.420288

中图分类号：

O42 [声学];

学科分类号：

070206 [声学]; 082403 [水声工程];

摘要：

An experimental/numerical technique has been implemented to determine simultaneously the bulk and shear dynamic moduli (and loss factor) of viscoelastic materials of arbitrary shape under low-frequency (0.5-2.5 kHz) harmonic excitation. The method consists of measuring the dynamic response of the sample at several points on the surface with a set of five independent laser interferometers, and matching the response with the predictions from a finite element code in which the two complex elastic moduli are the adjustable parameters. Results are presented for measurements made in air, under standard pressure and temperature conditions, and compared with predictions based on Kerner's model. (C) 1997 Acoustical Society of American. [S0001-4966(97)06711-8].

引用

页码：3549 / 3555

页数：7

共 21 条

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[2]

CHABAN IA, 1965, SOV PHYS ACOUST+, V11, P81

[3]

Drain L. E., 1980, LASER DOPPLER TECHNI

[4]

Ferry JD, 1970, Viscoelastic Properties of Polymers